wrt 54g V8.2 with 3 Lans

I am trying to get 3 seperate wired Lans up into this one router. The current LANs are different IP ranges, 10.12.17.x , 10.1.10.x, and 192.168 ranges. Since these are machine LANs I do not want to start changing IP's but do want to connect wirelessly to them and all systems on the network are static IP's for now. For the time being they do not need any form of internet. I have the DD firmware up and running and was trying different VLAN configurations along with some Telnet commands to try and configure from some previous threads but to no avail.